Till now, BTG was available in separate scanned pdfs etc. But it is now compiled in a single pdf here so that we can see all the articles from 1944-60 here itself and read them comfortably. Please check the link: https://www.dropbox.com/s/q9l2pqt3xub7z3l/BTG%20COMPILATION%20%281944-1960%29.pdf?dl=0